Plant Growth and Development is a Class 11 Biology chapter that carries about 2.2% of the Biology questions in NEET. Practise it with 61 questions covering 2 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Plant Growth and Development had 26 questions, about 2.0 a year. The most in one paper was 3, in AIPMT 2014.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 3 |
| NEET 2025 | 2 |
| NEET 2024 | 2 |
| NEET 2023 | 2 |
| NEET 2022 | 3 |
| NEET 2021 | 3 |
| NEET 2020 | 3 |
| NEET 2019 | 2 |
| NEET 2018 | 0 |
| NEET 2017 | 1 |
| NEET 2016 | 1 |
| Re-AIPMT 2015 | 1 |
| AIPMT 2014 | 3 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
The region of a plant where active cell division occurs to produce new cells is called the:
Answer: A. meristematic region
Why: The meristematic region, located at root and shoot tips, is where active cell division occurs, producing new cells that later elongate and mature.
The cytokinins promote:
Answer: C. the cell division (cytokinesis), the formation of new leaves, and the delay of the senescence
Why: The cytokinins help to produce the new leaves, chloroplasts in the leaves, lateral shoot growth and adventitious shoot formation.
Heterophylly in the cotton, coriander and larkspur is the:
Answer: C. difference in the shape of the leaves produced in the juvenile and in the mature plants
Why: It depends on the phase of the plant.
The Went's experiment on the avena coleoptiles led to the discovery of:
Answer: A. auxin
Why: Auxin is generally produced at the shoot tips.
The three phases of growth in a plant, in order from the tip, are the zones of:
Answer: D. cell division, cell elongation and maturation
Why: Cells formed in the meristematic zone elongate and then differentiate in the maturation zone.
Abscisic acid (ABA), often called the stress hormone in plants, generally acts to:
Answer: B. induce stomatal closure and seed/bud dormancy
Why: ABA is the general inhibitor of plant metabolic processes, promoting stomatal closure under water stress and inducing dormancy in seeds and buds.
In the arithmetic growth, on plotting the length against the time, one obtains a:
Answer: C. linear curve
Why: It occurs in the root elongating at a constant rate.
The plant hormone primarily responsible for promoting cell elongation and apical dominance is:
Answer: B. auxin
Why: Auxin promotes cell elongation and suppresses the growth of lateral buds, maintaining the apical dominance of the main shoot.
Plant Growth and Development carries about 2.2% of the Biology questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 26 times, about 2.0 questions a year.
Plant Growth and Development is a Class 11 Biology chapter in the NCERT syllabus.
NeetVictory has 61 practice questions on Plant Growth and Development, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
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